I mean, it would be easy to make spells with 1-2-3 combos. They ARE instant, but Crimson Cyclone and Crimson Strike are both GCDs, tagged as "Spell", and a combo. Mountain Buster is an oGCD but has a similar effect. Verholy/Flare, Scorch, and Resolution are all Spell flagged and work as a combo. Scorch and Resolution both have the "Combo Action" tag in their descriptions as well.
It doesn't take a lot to shift from that to an actual 1-2-3 combo in terms of game mechanics.
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I think the point I'm making here is, I don't think you guys want "same level as the tanks". I think you want a higher level than WAR and SMN and something more akin to RDM or DNC (a Job I know you really like). But those are two very different statements, which leads to unnecessary disagreement because of confusion. That is, if you aren't saying what you actually want, then it's going to lead to people like me holding you to it and you being upset that you're being held to something you don't mean.
When someone says "like the tanks", I'm thinking 1-2-3 rotation (which is easier than DoT tracking, so actually easier than healers currently are, imo), a 1 min buff ability (which WHM has outright with PoM already), a long-ish CD damage ability (like Primal Rend or Confetior) (which WHM has outright with Misery already and SGE has with Plegma), and an oGCD or two to weave (which WHM has outright already with Assize).
It's why I've - several times now - listed out WAR and WHM abilities side by side and noted that other than the 1-2- (single target), 1- (AOE), and having two separate buttons for its single target vs AOE oGCD (but since they share a CD, I don't consider that an increase in complexity) that WAR has, that WHM already has an overall rotation very similar to WAR in terms of complexity, the only wrinkle is that WAR interacts more directly with its gauge for damage...but it's not a complex interaction (Fell Cleave spam with a TINY bit of nuance to Infuriate).
But this is because I'm working on the assumption that when people say they want healers to have rotations like the tanks, that it means WAR is a viable tank under that scenario. And when someone says similar complexity, it's a pretty similar argument since someone might point out that some healer mechanics are more complex than what respective tanks have (again, DoTs).
When the main distinction between them is the 1-2-3, is it surprising I might interpret your argument that way?
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And the thing is...I wouldn't mind that. I'd LOVE to trade in a DoT for a 1-2- combo. WAR's Storm's Path is so easy to track and upkeep compared to DoTs, it's not even funny.
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EDIT:
Anyway, the point isn't to be antagonistic.
It's just that I think we're essentially there already. It's also why, sadly, I don't think that's what people actually WANT when they ask for it. I say sadly, because I wouldn't mind that much.